Rotary engine.



No. 888,043. 8 PATENTED MAY 19, 1908.

' J. SOIPE.

ROTARY ENGINE.

APPLICATION FILED JUNE 26, 1906.

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No. 888,043. YPATENTED' MAY 19, 1908.

' .J. SGIPE.

ROTARY ENGINE.

APPLICATION FILED JUNE 26, 1906.

2 SHEETS-SHEET 2.

y I Svwzw'toz JOHN SGIPE, OF DUNN TOWNSHIP, OTTERTAIL COUNTY, MINNESOTA.

ROTARY ENGINE.

Specification of Letters Patent.

Patented May 19, 1908.

Application filed June 26, 1906. Serial No. 323,511.

To all whom it may concern:-

Be it known that I, J OHN'SOIPE, a citizen of the United States,residing at Dunn township, in the county of Ottertail and State ofMinnesota, have invented certain new and useful Improvements inRotary-Engines, of which the following is a specification.

My invention relates to traction engines especially adapted for use onfarms for pro pe ling plows, cultivators, etc., and has for its objectthe provision of an engine of the type stated in which the drive shaftis secured directly to the pistons of a rotary steam en gine, saidengine and valve gear thereon being of novel construction.

My invention will be described in detail hereinafter and illustrated inthe accompanying drawings in which- Figure 1, is aview of a farm enginewith my improved rotary engine mounted thereon, Fig. 2, a verticalsectional view of the rotary engine, Fig. 3, a horizontal sectional viewon the line 0c00 of Fig. 1. view on the line 'y of Fig. 1, Fig. 5, asimilar view on the line zz of Fig. 1, and Fig. 6, a fragmentalsectional view of 'one of the engine pistons.

In the drawings similar reference characters indicate correspondingparts throughout the several views.

1 indicates the platform of my improved engine having the rear portioncut away as shown at 2 for the drive wheels 3 journaled in boxes 4secured under the platform.

16 represents a platform at the rear of the engine, over drive wheels 3,on which is mounted the motor 17 for driving shaft 18 journaled in boxes19.

Pulleys 20 are keyed on shaft 18 and 21 indicate drive cables geared tosaid pulleys and in circumferential grooves 22 in drive wheels 3. Itwill be obvious that instead of cables 21 chains or other flexibleelements may be substituted as desired, it being con sidered unnecessaryto illustrate such obvious changes.

The motor 17 is of the rotary steam engine type and consists of twincylinders 23 in each of which are rotatably mounted pistons 24 keyed toshaft 18. Pistons 24 are each formed with circumferential grooves 25 adjacent to each edge in which fit packing rings 26 while 27 indicates aprojection extending half-way around the piston between the packingrings 26 the ends thereof forming the Fig. 4, a similar heads 28 againstwhich the steam acts when the motor is in operation.

29 indicates the inlet port for the admission of steam to the cylinders23, the steam being supplied by a suitable boiler 30 secured on platform1 and connected with the port 29 by means of pipe 31. Port 29 connectswith valve chamber 32 in which is rotatably mounted disk 33 having holes34 and 35 therein adapted to register with ports 36 and 37 in the bottomof chamber 32. Ports 36 and 37 communicate with chambers 38 and 39respectively from which chambers extend ports 40 and 41 which open intocylinders 23, the ports 36 and 40 and chamber 38 being utilized when themachine is driven in a forward direction, while ports 37 and 41 andchamber 39 are utilized when it is desired to back the machine.

It will be understood that the course of the steam to the cylinders 23is controlled by the position of disks 33. When the hole 34 thereinregisters with port 36 the steam is admitted to drive the machineforwardly while when hole 35 registers with port 37 the machine isbacked. When the disk is turned so that neither of the holes thereinregister with one of the ports the steam is cut off from the cylindersentirely. The position of disk 33 is controlled by lever arm 42 securedto stem 43 on said disk, said lever having slidably mounted thereon aspringactuated catch 44 which engages notches 45 in segmental rack 46.

47 represents pivoted steam guides having their ends opposite thedelivery ends of ports 40 and 41 which swing against the pistons 24under the impulse of the steam to direct the steam against the heads 28to cause the pistons to rotate in the direction desired.

48 represents clips secured to platform 16 by means of bolts 49 securedin slots 50 therein and having rollers or pulleys 51 journaled thereinthat engage cables 21 and act as tighteners to hold said cables to theirwork.

Having thus described my invention what I claim is A rotary steam enginecomprising a casing having two cylinders, a rotatable piston in eachcylinder, each of said pistons having a projection thereon extendinghalf way around the piston and forming propelling heads at each end, avalve mechanism" for controlling the passage to said chambers having aninlet port opening to the chamber a disk rotatably mounted in the bottomof I the engine casing to direct the steam from 10 said chamber andhaving steam passages the valve mechanism aforesaid against thetherethrough, outlet ports in the bottom of propeller heads above setforth.

the chamber adapted to register with the i In testimony whereof I heretoaffix my steam passages in the disk, other chambers signature in thepresence of two witnesses.

in communication with said outlet ports, JOHN SCIPE. steamways forconveying the steam from Witnesses:

the last named chambers to the engine cyl- I B. PHILLIPS inders, andsteam guides pivotally secured to l GUY A. PHILLIPS.

